Construction for preventing water from penetrating between electric wires inserted into grommet

摘要

A construction for preventing water from penetrating between electric wires (W) inserted into an electric wire insertion portion (10c) of a grommet (10) has a foamed sheet (11) with independent cells. The foamed sheet (11) has an adhesive layer (11b) formed on its upper surface and an adhesive layer (11c) formed on its lower surface. A plurality of the electric wires (W) are disposed parallel with one another at required intervals on the foamed sheet (11). The electric wires are positioned in a region whose area is approximately half of the total area of the adhesive layer (11b) formed on the upper surface of the foamed sheet (11). The foamed sheet (11) is folded upon itself to sandwich the electric wires (W) between the adhesive layer (11b) formed on the upper surface. Thereafter the folded foamed sheet (11) is rolled to dispose the plurality of the electric wires (W) at required intervals in the foamed sheet. The adhesive layer formed on the lower surface of the foamed sheet is bonded to itself.